Problem: Let x1​ and x2​ be such that x1â€‹î€ =x2​ and 3xi2​−hxi​=b,i=1,2. Then x1​+x2​ equals
Answer Choices:
A. −3h​
B. 3h​
C. 3b​
D. 2b
E. −3b​
Solution:
Since x1​ and x2​ are the two roots of the quadratic equation 3x2−hx−b=0, the sum of the roots is 3h​.